Merge remote-tracking branch 'remotes/stsquad/tags/pull-tcg-plugins-281019-4' into staging

TCG Plugins initial implementation

  - use --enable-plugins @ configure
  - low impact introspection (-plugin empty.so to measure overhead)
  - plugins cannot alter guest state
  - example plugins included in source tree (tests/plugins)
  - -d plugin to enable plugin output in logs
  - check-tcg runs extra tests when plugins enabled
  - documentation in docs/devel/plugins.rst

# gpg: Signature made Mon 28 Oct 2019 15:13:23 GMT
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* remotes/stsquad/tags/pull-tcg-plugins-281019-4: (57 commits)
  travis.yml: enable linux-gcc-debug-tcg cache
  MAINTAINERS: add me for the TCG plugins code
  scripts/checkpatch.pl: don't complain about (foo, /* empty */)
  .travis.yml: add --enable-plugins tests
  include/exec: wrap cpu_ldst.h in CONFIG_TCG
  accel/stubs: reduce headers from tcg-stub
  tests/plugin: add hotpages to analyse memory access patterns
  tests/plugin: add instruction execution breakdown
  tests/plugin: add a hotblocks plugin
  tests/tcg: enable plugin testing
  tests/tcg: drop test-i386-fprem from TESTS when not SLOW
  tests/tcg: move "virtual" tests to EXTRA_TESTS
  tests/tcg: set QEMU_OPTS for all cris runs
  tests/tcg/Makefile.target: fix path to config-host.mak
  tests/plugin: add sample plugins
  linux-user: support -plugin option
  vl: support -plugin option
  plugin: add qemu_plugin_outs helper
  plugin: add qemu_plugin_insn_disas helper
  plugin: expand the plugin_init function to include an info block
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 41 insertions, 2 deletions

diff --git a/tests/tcg/Makefile.target b/tests/tcg/Makefile.target
index 5a9a6faba4..3c7421a356 100644
--- a/tests/tcg/Makefile.target
+++ b/tests/tcg/Makefile.target
@@ -30,7 +30,7 @@
 #
 
 all:
--include ../../config-host.mak
+-include ../../../config-host.mak
 -include ../config-$(TARGET).mak
 
 # for including , in command strings
@@ -66,6 +66,8 @@ conditional-diff-out = 							\
 
 # Tests we are building
 TESTS=
+# additional tests which may re-use existing binaries
+EXTRA_TESTS=
 
 # Start with a blank slate, the build targets get to add stuff first
 CFLAGS=
@@ -109,7 +111,7 @@ else
 
 endif
 
-all: $(TESTS)
+all: $(TESTS) $(EXTRA_TESTS)
 
 #
 # Test Runners
@@ -121,11 +123,39 @@ all: $(TESTS)
 #
 
 RUN_TESTS=$(patsubst %,run-%, $(TESTS))
+
+# If plugins exist also include those in the tests
+ifeq ($(CONFIG_PLUGIN),y)
+PLUGIN_DIR=../../plugin
+VPATH+=$(PLUGIN_DIR)
+PLUGINS=$(notdir $(wildcard $(PLUGIN_DIR)/*.so))
+
+# We need to ensure expand the run-plugin-TEST-with-PLUGIN
+# pre-requistes manually here as we can't use stems to handle it. We
+# also add some special helpers the run-plugin- rules can use bellow.
+
+$(foreach p,$(PLUGINS), \
+	$(foreach t,$(TESTS),\
+		$(eval run-plugin-$(t)-with-$(p): $t $p) \
+		$(eval run-plugin-$(t)-with-$(p): TIMEOUT=30) \
+		$(eval RUN_TESTS+=run-plugin-$(t)-with-$(p))))
+endif
+
+strip-plugin = $(wordlist 1, 1, $(subst -with-, ,$1))
+extract-plugin = $(wordlist 2, 2, $(subst -with-, ,$1))
+
 RUN_TESTS+=$(EXTRA_RUNS)
 
 ifdef CONFIG_USER_ONLY
 run-%: %
 	$(call run-test, $<, $(QEMU) $(QEMU_OPTS) $<, "$< on $(TARGET_NAME)")
+
+run-plugin-%:
+	$(call run-test, $@, $(QEMU) $(QEMU_OPTS) \
+		-plugin $(PLUGIN_DIR)/$(call extract-plugin,$@) \
+		-d plugin -D $*.pout \
+		 $(call strip-plugin,$<), \
+	"$* on $(TARGET_NAME)")
 else
 run-%: %
 	$(call run-test, $<, \
@@ -133,6 +163,15 @@ run-%: %
 		  -chardev file$(COMMA)path=$<.out$(COMMA)id=output \
 	   	  $(QEMU_OPTS) $<, \
 	  "$< on $(TARGET_NAME)")
+
+run-plugin-%:
+	$(call run-test, $@, \
+	  $(QEMU) -monitor none -display none \
+		  -chardev file$(COMMA)path=$@.out$(COMMA)id=output \
+	   	  -plugin $(PLUGIN_DIR)/$(call extract-plugin,$@) \
+	    	  -d plugin -D $*.pout \
+	   	  $(QEMU_OPTS) $(call strip-plugin,$<), \
+	  "$* on $(TARGET_NAME)")
 endif
 
 gdb-%: %